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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

NMR investigation of commercial carbon black filled vulcanized natural rubber exposed to petrodiesel/biodiesel mixtures

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Silva, Lorena M. A. ; Andrade, Fabiana Diuk ; Filho, Elenilson G. A. ; Monteiro, Marcos Roberto ; de Azevedo, Eduardo Ribeiro ; Venancio, Tiago
Total Authors: 6
Document type: Journal article
Source: FUEL; v. 186, p. 50-57, DEC 15 2016.
Web of Science Citations: 4

The impact of biodiesel on the durability of the engine is a growing concern due to its corrosive characteristics. Nuclear magnetic resonance in the frequency (High Resolution NMR spectroscopy) and time (TD-NMR) domains were complementarily used to understand structural, dynamical and chemical modifications in commercial carbon black filled vulcanized natural rubber (CBVNR) due to contact with petroleum diesel/biodiesel mixtures. The results indicated that in biodiesel rich mixtures, besides the expected swelling effect, the interaction of fuel mixtures with CBVNR promotes the exudation of the filler together with attached polymer chains, which increases the number of defects and induces gaps in the remained network structure. The exudation of carbon black aggregates indicates that searching of fillers/elastomers combinations with higher affinity is an important parameter in the development of materials compatible with biodiesel. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/14099-3 - Use of Time Domain - NMR for the characterization of high viscosity organic systems
Grantee:Fabiana Diuk de Andrade
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/18354-8 - Dynamics and structure of polymer systems as studied by nuclear magnetic resonance
Grantee:Eduardo Ribeiro de Azevedo
Support Opportunities: Regular Research Grants